| Competition: | Slovenian Second League |
| Season: | 2020–21 |
| Winners: | Radomlje |
| Promoted: | Radomlje |
| Relegated: | Šmartno 1928 Brda |
| League Topscorer: | Kaheem Parris (16 goals) |
| Matches: | 176 |
| Total Goals: | 556 |
| Prevseason: | 2019–20 |
| Nextseason: | 2021–22 |
The 2020–21 Slovenian Second League season was the 30th edition of the Slovenian Second League. The season began on 11 August 2020 and ended on 22 May 2021.[1]
| Club | Location | Stadium | Capacity | |
|---|---|---|---|---|
| Beltinci | Beltinci Sports Park | 1,346 | ||
| Bilje | Stadion V dolinci | 300 | ||
| Dobrovo | Vipolže Stadium | 193 | ||
| Brežice | Brežice Stadium | 516 | ||
| Dob | Dob Sports Park | 300 | ||
| Ptuj | Ptuj City Stadium | 2,207 | ||
| Ravne na Koroškem | Ravne City Stadium | 600 | ||
| Dekani | Dekani Sports Park | 400 | ||
| Novo Mesto | Portoval | 500 | ||
| Krško | Matija Gubec Stadium | 1,470 | ||
| Lendava | Lendava Sports Park | 2,000 | ||
| Ajdovščina | Ajdovščina Stadium | 1,630 | ||
| Radomlje | Radomlje Sports Park | 700 | ||
| Velenje | Ob Jezeru City Stadium | 1,864 | ||
| Šmartno ob Paki | Šmartno ob Paki Stadium | 717 | ||
| Kranj | Stanko Mlakar Stadium | 2,060 |
| Rank | Player | Team | Goals |
|---|---|---|---|
| 1 |  Kaheem Parris | Krka | 16 |
| 2 | Danijel Šturm | Bilje | 13 |
| 3 |  Meshack Ubochioma | Nafta 1903 | 12 |
| Tin Matić | Bilje | ||
| 5 | Nermin Haljeta | Nafta 1903 | 11 |
| 6 | Marko Huč | Krka | 10 |
| Jakob Kodermac | Primorje | ||
| Stjepan Oštrek | Nafta 1903 | ||
| 9 | Tadej Trdina | Fužinar | 9 |
| Luka Cerar | |||
| Kristijan Šipek | Dob |